Improvement in gun-locks



l. H. SHAPLEY.

GuILLOGk. No. 39,501. Patented'Aug. 11, 1863.

Urirrnn r rEs ATENT Grinch.

IMPROVEMENT IN GUN-LOCKS.

Specification forming part of Letters Patent No. 39,50j, dated August11, 1863.

To all whom it may concern:

Be it known that I, J. HAMILTON SHAPLEY, of Exeter, in the county ofRockingham and State of New Hampshire, have invented a new and usefulimprovement for side looks with horizontal or sidewise motion of thehammer for fire-arms; and I. do hereby declare that the followingis afull, clear, and exact description of the construction and operation ofthe same, reference being had to the accompanying drawings, making apart of this specification, of Which Figure l is a perspective view ofthe interior of a lock; Fig. 2,the hammer and the different partsconnected therewith; Fig. 3 the dog or sear and the different parts ofit.

In Fig. 1, the letters A B O D representthe plate, on which twoshoulders or flanges, EE are constructed lengthwise of the plate, with aspace between the flanges and an aperture or hole through the platebetween them, but not as long as the flanges. In one end of both flangesspaces or slots are out, as at G.

Fig. 2 represents the hammer and the different parts connectedtherewith, of which R is the hammer; S, the shank, L, the heel; T Tnotches on the front of the heel; U, the screw or pin hole on which thehammer turns, and NV a curvilinear projection from the back of the heel,against which the mainspring M operates to throw the hammer forward.

In Fig. 3, H H H represent the sear I I, the side arm, and J another armat right angles horizontally with I I, and Q the nose of the scar, andin the side arm, I I, is a small slot. Through the face of the plate theheel L, Fig. 2, of the hammer is inserted between the flanges on theinner side of the plate, and there secured by a screw-pin, 0, Fig. 1,passing though the flanges and heel of the hammer at U, Fig. 2. The searH H H Fig. 3, is perpendicular and at right angles to the arm I I, andthe arm J is at right angles and horizontal to the arm I I. Projectingfrom the part H H H is a nose, Q, forming an obtuse angle with H and ofthe width of the space between the flanges where it plays. H and H ofthe sear are placed in the slots Gin the ends of the flanges, whichbrings the nose Q of the sear to the notches T and T 011 the front ofthe heel of the hammer. The sear is secured in its place by the arm I I,passing along the side of the flange E In the arm I I is a slot, throughwhich a small screw, 1?, passes into the flange E and on this screw thearm I I slides. The trigger of the rifle or gun rests against the backof the arm J. When the hammer is pulled half back or half-cocked, thenose of the searis, by the spring K, (which is securedby a screw to theside of the flange E at Fthe end of the spring presses against the searat H,) pressed into the bent T, and there secures the hammer at thehalf-cock. On again pulling the hammer farther back, the nose Q of thesear is pressed into the bent T, where the hammer is there held by thenose Q of the sear, at full-cock. By pulling the trigger against the armJ, it presses the arm I I and the sear H H H forward, which re lievesthe nose of the sear from the notches of the hammer, and the force ofthe mainspring M throws the hammer forward upon the cap, to explode it.

The shape of the plate and of the hammer may be made of any fancydesign.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

The sear and the nose of the sear and all its parts, which are fullyabove described, or their equivalent, and the mode of using or applyingthe same.

Exeter, New Hampshire, July 10, 1863.

J. HAMILTON SHAPLEY.

Witnesses:

ANDREW S. BROWN, SAM. M. WILoox.

